Stove-pipe damper



(No Model.)

B. C. OBLINGER.

STOVE PIPE DAMPER w/r/vmsm: L J //v mvron,

ATTORNEY.

UNITED STATES PATENT OFFICE.

BARRETT O. OBLINGER, OF INDEPENDENCE, MISSOURI.

STOVE-PIPE DAMPER.

SPECIFICATION forming part of Letters Patent. No. 368,485, dated August16, 1887.

Application filed November 29, 1886. Serial No. 220,132.

To aZZ whom) it may concern:

Be it known that I, BARRETT O. OBLINGER, of Independence, Jacksoncounty, Missouri, have invented certain new and useful Improvements inStove-Pipe Dampers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My present invention relates to an improvement in dampers, and moreparticularly to that class of Stovepipe dampers in which defleeting-plates are used for the purpose of allowing afree passage forthe products of combustion while at the same time retarding the passageof the heat; and my invention consists in certain novel features ofconstruction and combinations of parts, as will be more fully describedhereinafter, and pointed out in the claims.

In the drawings, which illustrate the manner of carrying out myinvention, Figure 1 is a perspective View of the damper with the platesin a closed position, and Fig. 2 is a sectional elevation of the same,looking toward the right-hand side of Fig. 1, and showing the plates inan open position.

In the construction of my damper I provide a rectangular frame, A, whichconsists of opposite side bars or plates, 2, and crossbars 1, and whichsupports the several plates independently of each other, as shown.

The main operatingplate O is looselyjournaled in the sides of the frameA, and is provided with an operating-handle, b, projecting from one sidethereof through one of the side bars, 2, and out through the stove-pipea suitable distance.

Ihe defiectingplatcs B and D are loosely journaled in the frame A, onopposite sides of the plate 0, and each at a distance therefrom not toexceed one-half of the distance between the points on the plate G whichare intended to come in contact with the plates B and D, respectively.

It should be observed that the several plates are not in any way securedtogether, and that they are free to be rotated to a limited extentindependently of each other, though, of course, as the upper and lowerplates are not provided with a handle, they cannot be turned from theoutside of the pipe, and must be op- (No model.)

erated by the main plate, which is provided with a handle, as beforestated.

The frame A is to be placed in the first joint of pipe above the stove,at the upper end of thejoint, and is supported in position bylugs a,which project from the outer surface of the side bars,2,and rest uponthe edge of the pipe, and for the purpose of allowing the nextjointabove to lap over the lower one a sufficient distance (as usual)opposite notches for the reception of said lugs should be cut in thejoint of pipe H, as clearly shown in Fig. 2; and if still a greateramount of lap is desired between the two joints of pipe notchescorresponding in location to those made in the lower joint can be madein the upper one, as may be desired.

If the notches in the pipe should inadvertently be made so much largerthan the lugs as to leave an opening through which smoke could escape,the lateral projections or wings 10 on the side bars will cover saidopening, and thus prevent any escape of the products of combustion intothe room in which the stove is located. Said wings are preferably castintegral with the side bars, as I propose to make said bars of eastmetalin fact, the entire damper should be constructed of east-iron, assuch material can be cheaply produced.

The main plate 0 is provided with a central opening, (I, in the usualmanner, and with suitable journals which engage hearings in the sidebars, all as shown. As there is no way of placing main plate 0 in theframe after it has been cast entire with handle bupon it, except to cuta slot in one of the side bars, I therefore provide such a slot, 6, andit extends from one of the bearings in the side bar in a diagonaldirection to one edge of same. lVith this construction the main plate 0can be placed in the frame by locating the journal that is oppo site thehandle I) in its bearing and afterward locating the other journal, thatcarries the said handle on its outer end, in the slot 6, as indicated inthe drawings.

Suitable bearings for the upper and lower plates are formed in the sidebars for the re ception of the journals carried bysaid plates, andalthough these bearings may consist simply of acircular aperture, andalthough the journals on the plates may be round, so as to engage thecircular bearings just mentioned,

plates triangular in cross-section, as shown, as

- I have found that such bearings will not permit the plates to beturned so easily as a round bearing would, and that more friction willbe generated by them, and that said plates will therefore be more likelyto retain the position in which they are placed than they otherwisewould. For the purpose of assisting the upper and lower plates indropping into aclosed position after they have been started by contactof the main plate, I locate the journals of said plates a short distanceabove the upper surface thereof, thereby locating their center ofgravity somewhat below the plane in which the bearings are located. Iwould say, however, that the bearings for these plates may be formed inthe usual manner, if desired, and that they will still operate with agood degree of economy.

Upwardly-projecting' lugs t are oppositely located on the lower surfaceof the upper plate, B, and the upper surface of the lower plate, D,respectively, for the purpose of receiving the impact of the main plateC. Still such lugs may be dispensed with, if desired. A small bar, e, islocated diametrically across the central opening, (1, in the main plate0, which is engaged by the lugs t during the operation of the damper,and the function of said bar is to prevent the said lugs and therespective edgesof the plates which carry them from entering into thecentral opening of the main plate, which they might forcibly engage werethe bar not provided, and thereby lock the main plate and another onetogether in sucha manner that they could not be rotated.

3 indicates the triangular journals of the upper and lower plates, and 4the triangular V or diamond-shaped bearings for the same in the sidebars. I

When the several plates composing the damper have, by reason of use,become covered with an accumulation of soot, they may be readily andthoroughly cleaned without removing from the pipe by partly rotating themain plate in one direction by means of handle b, and then quicklyreversing the movement, thus causing the upper and lower surfaces ofsame alternately to forcibly strike the lugs 13 on the other plates andjar the soot from them and also from itself at the same time.

Having thus described my invention, what I claim is- 1. In a Stovepipedamper, a suitable frame, in combination with a main operating-platehaving a central aperture and a suitable handle, and separate andindependent deflecting-plates j ournaled upon opposite sides of saidoperating-plate, the latter having a diameter one-half of which isgreater than the distance between the plates, substantially asdescribed.

2. In a stove-pipe damper, a suitable frame adapted to be removablylocated'in the pipe at the junction of two sections, said frame beingprovided with lugs adapted to rest in apertures in the pipe, incombination with plates independently journaled in said frame, sub.-stantially as described.

3. In a stove-pipe damper, a suitable frame provided with bearings inits side bars, in combination with plates separately and independentlylocated in said frame and-provided with journals adapted to turn in saidbearings, substantially'as described.

4. In astove-pipe damper, asuitable frame, in combination with a seriesof separate and independent plates, one of said plates having a diameterone'half of which is greater than the distance between the plates,substantially as described.

5. In a stove-pipe damper, a supporting- .frame adapted to removably fitin astovepipe, the side bars of said frame being providedwith-oppositely-located angular apertures, in combination with two ormore plates loosely mounted in said frame, and provided with angularjournals whichhave their bearings in said I angular apertures,substantially as described.

6. The combination, in a stove pipe damper,

In testimony whereof I affix my signature in presence of two witnesses.

BARRETT O. OBLI NGER.

Witnesses:

Tnos. B. MOAULEY, F. E. PARKER".

